Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Omri Wolf"'
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
Abstract Optical nonlinearities are intimately related to the spatial symmetry of the nonlinear media. For example, the second order susceptibility vanishes for centrosymmetric materials under the dipole approximation. The latter concept has been nat
Externí odkaz:
https://doaj.org/article/79d6de8e103b4376b4ed56489631e05a
Huygens’ Metasurfaces Enabled by Magnetic Dipole Resonance Tuning in Split Dielectric Nanoresonators
Autor:
Michael B. Sinclair, Salvatore Campione, Aleksandr Vaskin, Omri Wolf, John L. Reno, Sheng Liu, Gordon A. Keeler, Igal Brener, Isabelle Staude
Publikováno v:
Nano Letters. 17:4297-4303
Dielectric metasurfaces that exploit the different Mie resonances of nanoscale dielectric resonators are a powerful platform for manipulating electromagnetic fields and can provide novel optical behavior. In this work, we experimentally demonstrate i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27f9047582d2abf23fae5b7349a5e924
https://doi.org/10.1021/acs.nanolett.7b01301
https://doi.org/10.1021/acs.nanolett.7b01301
Autor:
Ting S. Luk, Thomas E. Beechem, Ines Montano, Salvatore Campione, John F. Klem, Michael B. Sinclair, Omri Wolf
Publikováno v:
Scientific Reports
Scientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
Scientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
We study semiconductor hyperbolic metamaterials (SHMs) at the quantum limit experimentally using spectroscopic ellipsometry as well as theoretically using a new microscopic theory. The theory is a combination of microscopic density matrix approach fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e22b1c5a2e1de6c978e5a1cd0dd316ac
http://europepmc.org/articles/PMC6232162
http://europepmc.org/articles/PMC6232162
Autor:
Nishant Nookala, Mikhail A. Belkin, Domenico de Ceglia, Salvatore Campione, Michael Scalora, Maria Antonietta Vincenti, Omri Wolf, Raktim Sarma, Igal Brener
Publikováno v:
2018 International Conference on Optical MEMS and Nanophotonics (OMN).
We experimentally demonstrate a novel approach of using coupling between a leaky mode resonance and intersubband transitions in semiconductor quantum wells to realize a hybrid dielectric-semiconductor metasurface with high second-harmonic conversion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76fac5da0c66e35ba2a0769e7098c22b
https://doi.org/10.1109/omn.2018.8454533
https://doi.org/10.1109/omn.2018.8454533
Autor:
Omri Wolf, Raktim Sarma, Stephen D. March, John F. Klem, Mikhail A. Belkin, Igal Brener, Seth R. Bank, Nishant Nookala, Jiaming Xu
Publikováno v:
Applied Physics B. 124
We report the design and operation of a nonlinear intersubband polaritonic metasurface for mid-infrared second harmonic generation. The metasurface is made of plasmonic nanoresonators filled with a multiple-quantum-well semiconductor heterostructure.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4be5d13981dd115941b116816758660c
https://doi.org/10.1007/s00340-018-7005-y
https://doi.org/10.1007/s00340-018-7005-y
Autor:
N. Nookala, Yaoran Liu, Omri Wolf, Andrea Alù, Jongwon Lee, Juan Sebastian Gomez-Diaz, Daniele Palaferri, Igal Brener, Seth R. Bank, Mykhailo Tymchenko, Mikhail A. Belkin, Stephen D. March
Publikováno v:
Scopus-Elsevier
We report difference-frequency generation in nonlinear polaritonic metasurfaces based on coupling of electromagnetic nanocavity modes with intersubband nonlinearities in semiconductor heterostructures. Nonlinear susceptibility of 2.7×105 pm/V and th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8bb522f758ab495d6b3878c41b1effe7
https://doi.org/10.1364/cleo_at.2018.jw2a.104
https://doi.org/10.1364/cleo_at.2018.jw2a.104
Publikováno v:
Thin Solid Films. 574:184-188
We studied the temperature dependence of the photocurrent spectra of a Ge-SiO2 composite thin film. We found that the spectral position of the photocurrent peak is determined by the competition between absorption and non-radiative recombination and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1dfba722bbdb2c8d834b953c24980d5
https://doi.org/10.1016/j.tsf.2014.12.004
https://doi.org/10.1016/j.tsf.2014.12.004
Autor:
Xuedan Ma, Sheng Liu, Han Htoon, Ting S. Luk, Omri Wolf, Jon K. Baldwin, Stephen K. Doorn, Michael B. Sinclair, Anthony James, Jason Dominguez, Nicolai F. Hartmann, Igal Brener
Publikováno v:
ACS nano. 11(6)
All-dielectric metasurfaces made from arrays of high index nanoresonators supporting strong magnetic dipole modes have emerged as a low-loss alternative to plasmonic metasurfaces. Here we use oxygen-doped single-walled carbon nanotubes (SWCNTs) as qu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ba9a2178851874dbfbb748384fe43ae
https://pubmed.ncbi.nlm.nih.gov/28535349
https://pubmed.ncbi.nlm.nih.gov/28535349
Autor:
Mykhailo Tymchenko, Yingnan Liu, Omri Wolf, Nishant Nookala, Markus-Christian Amann, Frederic Demmerle, Wells Bishop, J. Sebastian Gomez-Diaz, Mikhail A. Belkin, Igal Brener, Gerhard Boehm, Andrea Alù, Jongwon Lee
Publikováno v:
SPIE Proceedings.
Gradient metasurfaces, or ultrathin optical components with engineered transverse impedance gradients along the surface, are able to locally control the phase and amplitude of the scattered fields over subwavelength scales, enabling a broad range of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f274720f92d4eeb2b36b5138839712d8
https://doi.org/10.1117/12.2255915
https://doi.org/10.1117/12.2255915
Publikováno v:
Conference on Lasers and Electro-Optics.
Second order nonlinearity vanishes for centrosymmetric materials in the dipole approximation. For metamaterial this means second-harmonic-generation is negligible in highly symmetric meta-atoms. We show a new type of meta-atom in which the dipolar ap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52ed91accdc8c33bc3b7c272dd6c37db
https://doi.org/10.1364/cleo_at.2017.jtu5a.45
https://doi.org/10.1364/cleo_at.2017.jtu5a.45